In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

What type of tree can I carry in my hand?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

There is a straight highway. Four different villages lie on that highway. The distance between them is different. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km near to the fourth that it is to the second.

Can you calculate the distance between the fourth and the first village ?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Why Wine Glass Stem is so long?